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Table 4 Average hourly data of temperature (°C) and relative humidity (%) collected by ARPA Lombardia during water absorption measurements conducted before the treatments and after 1, 4, 7, 10 and 12 months from the application

From: On-site monitoring of the performance of innovative treatments for marble conservation in architectural heritage

Monitoring step Temperature (°C) Relative humidity (%)
Before treatments 30.9 41.0
After 1 month 21.4 37.6
After 4 monthsa 7.0a 87.6a
After 7 months 11.0 41.4
After 10 months 27.0 47.5
After 12 months 28.2 55.1
  1. aRefers to the environmental conditions recorded during the winter season monitoring step